Device for the clamping together of two bars or tubes at an angle with one another



Jan. 21, 1958 o. c. JENSEN 2,820,656

DEVICE FOR THE CLAMPING TOGETHER OF TWO BARS OR TUBES AT AN ANGLE WITHONE ANOTHER Filed March 9, 1954 Q INVENTOR Tll 0770 [7109/5 7'/A/.Vr/E/YSEN ATTORNEYS DEVICE FOR THE CLAMPING TOGETHER OF.

TWO BARS OR TUBES AT AN ANGLE WITH ONE ANOTHER Otto Christian Jensen,Gentofte, Denmark, assignor it); H. StIriuers Chemiske Laboratorium,Copenhagen,

enmar This invention relates to devices for the clamping together of twobars or tubes at an angle with one another. Such devices or clampsusually comprise two clampmg members adapted to be clamped together ontwo mutually crossing bars so as to press such bars directly against oneanother, each clamping member having a seat to receive one of the bars,the two seats being disposed at an angle with one another and beingconstgucted to support their respective bars from opposite si es.

In the known clamps of this type, the seats will ordinarily berelatively short so that it is diflicult e. g. to obtain great accuracyof the angle at which the two bars will be disposed. Moreover, in theknown clamps, the point of contact between the two bars will be locatedbetween the said two seats, and consequently it will be diflicult onloosening the clamp to separate the two bars from one another in alateral direction, such as is often desirable e. g. when the bars arevery long or have protruding objects fastened thereto. Also, owing tothe said arrangement of the known clamps, it is not possible in the useof the clamp to substitute e. g. a plane or cylindrical surface for oneof the bars or in other words to use the clamp for attaching a bar to aplane or cylindrical surface.

It is an object of the invention to construct a clamp of simple andinexpensive design and which is easy to operate for the clampingtogether of crossing bars and for the subsequent separation of huch barsin a lateral direction when desired.

It is also an object of the invention to construct a clamp by means ofwhich two bars may be clamped together at a right angle withsatisfactory accuracy.

A further object of the invention is to construct a clamp suitable notonly for the clamping together of two bars but optionally also for theclamping together of one bar and a flat or curved object.

With these objects in view, the invention consists of the arrangementsand combinations set forth in the appended claims. A specific embodimentof the invention will in the following be described with reference tothe accompanying drawing, in which Fig. 1 shows one example of a clampaccording to the invention, in exploded view,

Fig. 2 the clamp in position for the clamping together of two bars at aright angle with one another, the view being taken from one side of theclamp,

Fig. 3 the same as viewed from one end of the clamp, and

Fig. 4 a view similar to Fig. 3, but with a cylindrical objectsubstituted for one of the bars.

In Figs. 1, 3 is a clamping member which is made from sheet material inthe form of an elongated strip provided with two lateral lugs 5 and 6 atone end and an end lug 4 at the other end. The lateral lugs 5 and 6 arebent at an angle of 90 relative to the body of the clamping member alonglongitudinal lines 15 and 16 United States Patent 0 and are providedwith angular notches 17, which form a seat adapted to receive a bar ortube 1, so as to support said bar or tube from one side. I

The end lug 4 is similarly bent along a transverse bending line 18 andis provided with an angular notch 19 forming a seat adapted to receive asecond bar or tube 2 in a position at right angles to the bar or tube 1received in the seat formed by the notches 17 and to support the bar 2from the same side as that from which the bar 1 is supported in the seat17.

8 is a second clamping member which comprises a book 7 and a threadedshank 9 received in a hole 11 intermediate the seats of the firstclamping member 3. The hook portion 7 of the second clamping memberforms an angular seat which is substantially aligned with the seat 19 ofthe first clamping member but is inverted relative thereto so as tosupport the bar or tube 2 from the other side.

To facilitate the manipulation of the clamp, in the construction shown,the shank 9 is flattened as indicated at 10, and the hole 11 issimilarly constructed with a flat side 12 so that the clamping member 8cannot rotate relative to the clamping member 3. In this manner theseats formed by the hook 7 and the lug 4 of the clamping member 3respectively will always remain substantially aligned, also when theclamp is being engaged with or disengaged from a pair of bars or tubesto be connected with one another.

In order to use the clamp, one bar 1 is placed in the seat formed by theangular notches of the lugs 5 and 6 and a second bar 2 is placed in theseats formed by the lug 4 and the hook 7. The two clamping members arethereupon clamped together by tightening a nut 13 engaged with thethread of the shank 9 whereby the two bars are pressed directly againstone another and at the same time are pressed against their respectiveseats. When it is again desired to separate the two bars or tubes fromone another, the nut 13 is loosened and as will be seen, it is possiblealready after a relatively small loosening movement to separate the twobars or tubes by pulling them out in the transverse direction, sincenone of the tubes interferes with such pulling out of the other tube.

As illustrated in Fig. 4 and in dotted lines in Fig. 2, the clamp canalso be used for attaching one bar 2 to an object other than a bar ortube such as e. g. a fiat or curved object 14. In this case, the fiat orcurved object takes the place of the bar 1 and is engaged by the lugs 5and 6 though of course it cannot pass into the angular notches thereof.This use of the clamp is possible owing to the fact that the lugs 5 and6 are provided at the end of one of the clamping members, so that thereis no obstacle to the moving in and out of objects between the bar 2 andthe lugs 5 and 6.

I claim:

1. A clamp comprising a clamping member provided at one end with twomutually parallel and spaced lugs having aligned notches forming a seatto receive and support a rod from one side, and provided at its otherend with a lug perpendicular to said first-mentioned lugs and having anotch forming a second seat to receive a second rod in a positionperpendicular to said first-mew tioned rod and to support saidsecond-mentioned rod from the same side as that from which saidfirst-mentioned rod is supported in said first-mentioned seat, a secondclamping member having a counter seat located intermediate said seats ofsaid first-mentioned clamping member and being substantially alignedwith but inverted relative to said second-mentioned seat of saidfirst-mentioned clamping member so as to be capable of supporting saidsecond-mentioned rod from the other side, and

Patented Jan. 21, 1958' genomes.

M1181 for stomping said members to geth'er, 2,, A ,c lamg, comprisingka: clamping member. having spaced: an gul'ar nd" pol'tionyproje'cfinga;from: one fece thereof, said sid end' porfionsheving 'alignecfnotchesfofiniii'g a seat; and-an angniar'end portion-projecting from t lie-seme face*of'-said Ho'dj portion. and disposed V at rfglit angie's ibsm'd? first=mentionecfiend portions; said se'ebrid-ndefltibned. en'fportion beingfco'nstrllc teci with a no'teh forming anofher sedf; zr's'ee'ond 'cl arnp ing mem- Bee Having a countrseafiirated"interimedifice:said seats v of said first-mentioned ehmping'm'ernherand Being snbstzfntizl'lfy-eligned:withhne invertedf relat-ivefo said second menticinedseed of said first mentioned clamping 3comprising 21* ram ing: memherthe form of m 'efong'afetfsm'pofsfieevmaterfel providedat one end- 'Witliiteraf iugs'afi- Bothsides, said Iugs' Being bent up along longitudinal lines andbeing-providedwith aligned notches" to form a seae-to rec'eive andasupport a rod-from one side tsaid strip: being provided at its other endwith an end lug bent up along a transverse line and provided with anotch to form a second seat to receive a second rod in apositionperpendicular to said firstmentioned rod and to support saidsecond-mentioned rod fhorn the; snme'zsider as: that". from which: saidfirst-mentione|i= is supported; in said firsbmentioned'seat, a secondclamping member having a-counterseat located intermediate saidnSBBtSgDfi. said first-mentioned'-i clamping References Cited'in the fileof this patent UNITED STATES PATENTS 319,652 Korns Oct. 21,1919 7467,972 Beckett Sept. 11 19,23 7

2175,4 53" Barcy: v oe:. 1o,.,1,93.9

